Class: Rufus::TrackingScheduler

Inherits:
Object
  • Object
show all
Defined in:
lib/rufus-runner/tracking_scheduler.rb,
lib/rufus-runner/tracking_scheduler.rb

Overview

Wraps Rufus’s scheduler class with signal handling, cancellation of jobs, and logging.

Defined Under Namespace

Classes: ForkingJobRunner, JobRunner, ThreadingJobRunner

Constant Summary collapse

GRACE_DELAY =

wait that long for jobs to complete before quitting (seconds)

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Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ TrackingScheduler

Returns a new instance of TrackingScheduler.



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# File 'lib/rufus-runner/tracking_scheduler.rb', line 17

def initialize(options = {})
  @options = DefaultOptions.merge(options)
  @scheduler = Rufus::Scheduler.new
  log('scheduler started')
end

Class Method Details

.start(options = {}) ⇒ Object 



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# File 'lib/rufus-runner/tracking_scheduler.rb', line 51

def self.start(options = {})
  EM.run do
    scheduler = new(options)
    scheduler.send :setup_traps
    yield scheduler
  end
end

Instance Method Details

#log(string) ⇒ Object 



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# File 'lib/rufus-runner/tracking_scheduler.rb', line 68

def log(string)
  $stdout.write "[#{$PROGRAM_NAME} #{format_time Time.now}] #{string}\n"
  $stdout.flush
end

#run(options = {}, &block) ⇒ Object 



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# File 'lib/rufus-runner/tracking_scheduler.rb', line 23

def run(options={}, &block)
  return unless rails_environment_matches?(options.delete(:environments))
  options = @options.merge(options)

  name = options.delete(:name) || 'noname'
  case options.delete(:fork) || :thread
  when :thread
    job_runner_class = ThreadingJobRunner
  when :process
    job_runner_class = ForkingJobRunner
  else
    fail ArgumentError.new("option :fork needs to be either :thread or :process")
  end

  schedule(options) do |job|
    job_runner = job_runner_class.new(
      :name => name,
      :job => job,
      :block => block,
      :scheduler => self
    )
    job_runner.run
  end

  log("scheduled '#{name}'")
  nil
end

#shutting_down! ⇒ Object 



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# File 'lib/rufus-runner/tracking_scheduler.rb', line 59

def shutting_down!
  @shutting_down = true
end

#shutting_down? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/rufus-runner/tracking_scheduler.rb', line 63

def shutting_down?
  !!@shutting_down
end